I have been saving little baggies that my SU supplies come in, but when I went to make these cards, I realized most of them had tiny air holes in them! So I went to Michaels and found some in the jewelry section.

I then needed some gel, and found both a white and blue kind at the Dollar Store for $1 each.

These cards are a bit heavy and you wouldn't want them to pop in the mail, so you might want to hand deliver them. I know whoever receives them will love them, especially if they love anything nautical!